function bbnavi() {
document.getElementById("col3_container_header_bb").style.backgroundImage="url(/ftp/layout/images/col3/col3_container_header_bb.png)";
document.getElementById("col3").setAttribute("className", "js_on");
document.getElementById("tabNavi").style.display="block";
tabSwitch(1);
}

function newsnavi() {
document.getElementById("col3_container_header_news").style.backgroundImage="url(/ftp/layout/images/col3/col3_container_header_tabs.png)";
document.getElementById("newsNavi").style.display="block";
newsSwitch(1);
}

function tabSwitch(num) {
document.getElementById("branchenbuch_1").style.display="none";
document.getElementById("branchenbuch_2").style.display="none";
document.getElementById("branchenbuch_3").style.display="none";
document.getElementById("branchenbuch_4").style.display="none";
document.getElementById("branchenbuch_5").style.display="none";
document.getElementById("branchenbuch_"+num).style.display="block";
document.getElementById("tabNavi_1").style.fontWeight="normal";
document.getElementById("tabNavi_2").style.fontWeight="normal";
document.getElementById("tabNavi_3").style.fontWeight="normal";
document.getElementById("tabNavi_4").style.fontWeight="normal";
document.getElementById("tabNavi_5").style.fontWeight="normal";
document.getElementById("tabNavi_"+num).style.fontWeight="bold";
}

function newsSwitch(num) {
document.getElementById("news_1").style.display="none";
document.getElementById("news_2").style.display="none";
document.getElementById("news_3").style.display="none";
document.getElementById("news_4").style.display="none";
document.getElementById("news_5").style.display="none";
document.getElementById("news_"+num).style.display="block";
document.getElementById("newsNavi_1").style.fontWeight="normal";
document.getElementById("newsNavi_2").style.fontWeight="normal";
document.getElementById("newsNavi_3").style.fontWeight="normal";
document.getElementById("newsNavi_4").style.fontWeight="normal";
document.getElementById("newsNavi_5").style.fontWeight="normal";
document.getElementById("newsNavi_"+num).style.fontWeight="bold";
}